HI, ANYONE WHO HATES TO SCRUB THEIR TOILET BOWL SHOULD USE THE PURICLE 110 SELF CLEANING TOILET SYSTEM. YOU NEVER HAVE TO SCRUB YOUR TOILET BOWL AGAIN, AND ITS SAFE FOR SEPTIC SYSTMS AND TOILET TANK PARTS, PLUS IT LASTS 1 YR- 4000 FLUSHES GUARANTEED! ITS WONDERFUL!